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Finding the Fourth Proportional to 355,052.80, 489,970.37 and 193,907.89

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Solution

The fourth proportional to 355,052.80, 489,970.37 and 193,907.89 is: 267,591.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,052.80 : 489,970.37 = 193,907.89 : x
  2. Step 2: Convert to fraction form
    355,052.80/489,970.37 = 193,907.89/x
  3. Step 3: Cross multiply
    355,052.80x = 489,970.37 × 193,907.89
  4. Step 4: Simplify right side
    355,052.80x = 95,009,117,189.83
  5. Step 5: Solve for x
    x = 95,009,117,189.83/355,052.80
  6. Step 6: Final answer
    x = 267,591.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.